Finding the Fourth Proportional to 134,745.20, 202,117.80 and 84,881.60
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Solution
The fourth proportional to 134,745.20, 202,117.80 and 84,881.60 is: 127,322.40
Step by Step Solution
- Step 1: Write the proportion equation
134,745.20 : 202,117.80 = 84,881.60 : x - Step 2: Convert to fraction form
134,745.20/202,117.80 = 84,881.60/x - Step 3: Cross multiply
134,745.20x = 202,117.80 × 84,881.60 - Step 4: Simplify right side
134,745.20x = 17,156,082,252.48 - Step 5: Solve for x
x = 17,156,082,252.48/134,745.20 - Step 6: Final answer
x = 127,322.40
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.